(19)
(11) EP 0 346 243 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.03.1992 Bulletin 1992/10

(43) Date of publication A2:
13.12.1989 Bulletin 1989/50

(21) Application number: 89401616.1

(22) Date of filing: 09.06.1989
(51) International Patent Classification (IPC)4: H04M 1/50, H04M 1/30, H03M 7/22
(84) Designated Contracting States:
DE FR GB

(30) Priority: 10.06.1988 JP 143138/88

(71) Applicant: FUJITSU LIMITED
Kawasaki-shi, Kanagawa 211 (JP)

(72) Inventor:
  • Hasegawa, Takashi
    Kawasaki-shi Kanagawa 211 (JP)

(74) Representative: Joly, Jean-Jacques et al
Cabinet Beau de Loménie 158, rue de l'Université
F-75340 Paris Cédex 07
F-75340 Paris Cédex 07 (FR)


(56) References cited: : 
   
       


    (54) Dial signal generator for generating dial pulse signal and dual tone multi-frequency signal


    (57) A dial signal generator supplied with dial data corresponding to a dial number, includes a dial data register (13) for storing the dial data, a decoder (81) for decoding the dial data supplied from the dial data register to thereby generate corresponding row and column numbers based on a dual tone multi-frequency (DTMF) system, a DTMF generator (14) for generating a DTMF signal from the row and column numbers generated by the decoder, and a dial pulse generator (16) for generating a dial pulse signal from the dial data supplied from the dial data register.







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